Bivalves Sentence Examples
Almost all of the other bivalves are deposit feeders.
Fossil sea shells can be found in the rocks, including bivalves related to modern oysters.
Opening large bivalves (shells) requires considerable force, and the Oystercatcher is well-adapted for this purpose.
In one genus (Planorbis) the plasma of the blood is coloured red by haemoglobin, this being the only instance of the presence of this body in the blood of Glossophorous Mollusca, though it occurs in corpuscles in the blood of the bivalves Arca and Solen (Lankester).
It includes outcrops of numerous coal seams, and several mudstone horizons yielding non-marine bivalves.
Plenty of excellent corals can be found, brachiopods, bivalves and Trilobites.
Leckhampton Hill If your prepared for the steel hill climb, this location has some superb brachiopods and bivalves in a hill-top quarry.
Most modern reefs are built by corals and algae, but sponges, bryozoans and bivalves have all formed reefs in the geological past.
Other fossils include numerous gastropods and bivalves, particularly small colonies of oysters.
Griesbach mentions the occurrence of some small bivalves in the shales of Greytown, but Anderson failed to find any fossils.Advertisement
Protohydra occurs in oysterbanks and Monobrachium also grows on the shells of bivalves, and both these hydroids probably fish in the currents produced by the lamellibranchs.
Many Gastropoda deposit their eggs, after fertilization, enclosed in capsules; others, as Paludina, are viviparous; others, again, as the Zygobranchia, agree with the Lamellibranch Conchifera (the bivalves) in having simple exits for the ova without glandular walls, and therefore discharge their eggs unenclosed in capsules freely into the sea-water; such unencapsuled eggs are merely enclosed each in its own delicate chorion.
Hickson and others, that in the bivalves Pecten and Spondylus, which also have eyes upon the mantle quite distinct from typical cephalic eyes, there is the same relationship as in Oncidiidae of the optic nerve to the retinal cells.
The soft sediment infauna may include amphipods, polychaete worms, bivalves and echinoderms.
Concentrations of lead, zinc, cadmium and other heavy metals in lichens and marine bivalves are measured.Advertisement